Device Pausing Write Dma; Table 37: Ultra Dma Cycle Timing (Device Pausing Write) - Hitachi HTS421212H9AT00 - Travelstar 120 GB Hard Drive Specifications

7.9.6 Device Pausing Write DMA

DMARQ
DMACK-
STOP
DDMARDY-
HSTROBE

Table 37: Ultra DMA cycle timing (Device Pausing Write)

PARAMETER
DESCRIPTION
tSR HSTROBE to DDMARDY-
time
tRFS DDMARDY- to final
HSTROBE time
Note: When a device does not satisfy the tSR timing, the device is ready to receive two more data words after DDMARDY- is
negated.
tSR
tRFS
MODE 0 MODE 1
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
– 50 – 30
– 75 – 70
Travelstar 4K120 Hard Disk Drive Specification
52
MODE 2 MODE 3
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
– 20 – –
– 60 – 60
MODE 4 MODE 5
MIN MAX MIN MAX
(ns) (ns) (ns) (ns)
– – – –
– 60 – 50